3 Polyester Tape 8402 8403 Technical Data January 2017 Product Description 3M Polyester Tape 8402 and 8403 are film tapes with a silicone adhesive for holding down bagging materials and parts during composite and metal bonding operations. Ideal for splicing applications on surfaces that are difficult to adhere too, such as silicone coated papers and films. Backing Adhesive Color Standard Roll Product Construction Length Polyester Silicone Translucent green 72 yds. (66 m) Note: The following technical information and data should be considered representative or Typical Physical typical only and should not be used for specification purposes. Properties ASTM Test Method 3M tape 8402 Adhesion to Steel: 23 oz./in. width (25 N/100 mm) D-3330 Tensile Strength at Break: 25 lbs./in. width (438 N/100 mm) D-3759 Elongation at Break: 125% D-3759 Backing Thickness: 0.92 mils (0.02 mm) D-3652 Total Tape Thickness: 1.9 mils (0.05 mm) D-3652 Short Term -60F to 425F (-50C to 218C) Removes cleanly and remains flexible after 3 Temperature Use Range: hours, 350F (177C), in autoclave. 3M tape 8403 Adhesion to Steel: 25 oz./in. width (27 N/100 mm) D-3330 Tensile Strength at Break: 41 lbs./in. width (718 N/100 mm) D-3759 Elongation at Break: 140% D-3759 Backing Thickness: 1.4 mils (0.04 mm) D-3652 Total Tape Thickness: 2.4 mils (0.06 mm) D-3652 -60F to 425F (-50C to 218C) Short Term Removes cleanly and remains flexible after 3 Temperature Use Range: hours, 350F (177C), in autoclave. Features Works in demanding conditions and retains flexibility in autoclave conditions in temperatures ranging from -60F (-50C) to 350F (176C) Higher heat resistance as compared with acrylics Silicone adhesive provides clean removal from a variety of surfaces Translucent green backing is easily identifiable for splicing applications Chemical resistant adhesive and backing provides durability in difficult environments 3M Polyester Tape 8402 8403 Application Ideas Flash breaker in metal bonding processes where the excess epoxy (flash) flows on the tape. Holding of bagging materials and parts during metal or composite bonding operations. Masking metal surfaces in acid or caustic chemical milling, etching, or anodization baths. Protective tape reduces scratches during handling and shipping. Paint mask for areas subject to higher temperature bake cycles. Splicing applications on surfaces that are difficult to adhere too, such as silicone coated papers and films. Splicing of films subject to high temperatures or chemicals. Storage Store under normal conditions of 60 to 80F (16 to 27C) and 40 to 60% R.H. in the original packaging. Shelf Life To obtain best performance, use this product within 24 months from date of manufacture. The technical information, guidance, and other statements contained in this document or otherwise Technical provided by 3M are based upon records, tests, or experience that 3M believes to be reliable, but the Information accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills sufficient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is granted or implied with this information. Product Selection Many factors beyond 3Ms control and uniquely within users knowledge and control can affect the use and performance of a 3M product in a particular application. As a result, customer is solely responsible and Use for evaluating the product and determining whether it is appropriate and suitable for customers application, including conducting a workplace hazard assessment and reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and use a 3M product and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to property.